Well here is my build log.
Specs:
X-travel = 31 inches
Y-travel = 18 inches
Z-travel = 6 inches
The linear rails are the supported 20mm 55" rails from VXB bearings. I bought a set of three along with some extra bearings and cut them to the lengths I needed.
The aluminum extrusions are the 30 series from bosch rexroth. All aluminum plate is mic6 tool and jig plate. Every part has been machined on a mill to make sure everything was all nice and true.
Please excuse any mess and clutter in the pics as my "workshop" is the floor in a closet sized dorm room.
Well lets get started